Manufactured the "trap doors", Cut the large holes for the access cover. Clamped the T708 cover plate to the rib and drilled all of the screw holes. Drilled all of the platenut rivet attach holes for the access cover.
Trap door done
Riveting the stiffener ring and platenuts to the rib
Access cover stiffener ring riveted on with anti-hangup for flop tube
